AMD Radeon RX590 8 GB GDDR5 (XFX Radeon RX 590 Fatboy OC+)

The fastest from Polaris line. Faster than a standard Radeon RX580.

Card got 2,5-slot wide cooler so nearby PCIe x16 slot won't be available for other cards.

Requires at least macOS Mojave 10.14.4 or later. Works great also with macOS Catalina, Big Sur, Monterey and Ventura.

System requirements:

- Apple Mac Pro 3,1 (2008), Apple Mac Pro 4,1 (2009) or Mac Pro 5,1 (2010-2012)
- installed macOS 10.14.4 (Mojave) or newer, macOS 10.13.4 (High Sierra) also supported but with lower performance
- native support by macOS Mojave/Catalina/Big Sur/Monterey/Ventura, no drivers needed

Key features:

- compatible with macOS and Windows (via BootCamp)
- supports Apple boot screen (gray screen with Apple logo on startup) on all ports (also on 4K displays)
- uses internal Mac Pro power supply
- supports PCI Express 2.0 link under macOS and Windows
- supports five displays simultaneously: 3x DisplayPort 1.4, 1x HDMI 1.4 (2.0 under Windows), 1x DVI-D dual-link
- supports 4K/5K/8K@60Hz via DisplayPort or 4K@30 Hz via HDMI and DVI ports
- supports OpenGL, OpenCL and Metal in applications and games
- allows Windows 8/8.1/10/11 installation in UEFI mode
- allows an upgrade to macOS Mojave, Catalina, Big Sur, Monterey or Ventura
- supports sound via HDMI and DisplayPorts under macOS

Technical specification:

- graphics processor clock: 1545 MHz
- memory speed: 2000 MHz
- amount and type of memory: 8 GB GDDR5
- bus width: 256-bit
- bus: PCI-Express 2.0 x16 (5.0 GT/s)